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CAT aliases

Introduced 1.0

The CAT aliases operation lists the mapping of aliases to indexes, plus routing and filtering information.


GET _cat/aliases?v

To limit the information to a specific alias, add the alias name after your query:

GET _cat/aliases/<alias>?v

If you want to get information for more than one alias, separate the alias names with commas:

GET _cat/aliases/alias1,alias2,alias3

Path and HTTP methods

GET _cat/aliases/<alias>
GET _cat/aliases

URL parameters

All CAT aliases URL parameters are optional.

In addition to the common URL parameters, you can specify the following parameters:

Parameter Type Description
local Boolean Whether to return information from the local node only instead of from the master node. Default is false.
expand_wildcards Enum Expands wildcard expressions to concrete indices. Combine multiple values with commas. Supported values are all, open, closed, hidden, and none. Default is open.


The following response shows that alias1 refers to a movies index and has a configured filter:

alias   | index     | filter  | routing.index |  | is_write_index
alias1  | movies    |   *     |      -        |       -         |      -
.opensearch-dashboards | .opensearch-dashboards_1 |   -     |      -        |       -         |      -

To learn more about index aliases, see Index aliases.

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